javascript - 使用jquery查找属性中的最小值和最大值

Question

我需要在数据属性中找到最小值和最大值，但它返回 0

这是我的代码

<div data-price="2" class="maindiv">test</div>
<div data-price="5" class="maindiv">test</div>
<div data-price="3" class="maindiv">test</div>
<div data-price="0" class="maindiv">test</div> 
<div data-price="25" class="maindiv">test</div>     
<div data-price="10" class="maindiv">test</div> 

<script>
    var ids = $("div[data-price]").map(function() {
        return this.id;
    }).get();

    var highest = Math.max.apply( Math, ids );
    var lowest = Math.min.apply( Math, ids );

    alert(highest);
    alert(lowest);
</script>

Answer 1

你需要返回data-price属性，而不是它的id

var ids = $("div[data-price]").map(function() {
    return $(this).attr("data-price");
}).get();

var highest = Math.max.apply( Math, ids );
var lowest = Math.min.apply( Math, ids );

alert(highest);
alert(lowest);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div data-price="2" class="maindiv">test</div>
<div data-price="5" class="maindiv">test</div>
<div data-price="3" class="maindiv">test</div>
<div data-price="0" class="maindiv">test</div> 
<div data-price="25"class="maindiv">test</div>     
<div data-price="10" class="maindiv">test</div>